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Discontinued Operations - Assets and Liabilities of Discontinued Operations on Consolidated Balance Sheets (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Sep. 30, 2013
Dec. 31, 2012
Disposal Group, Including Discontinued Operation, Balance Sheet Disclosures [Abstract]        
Cash and cash equivalents $ 2 $ 475 $ 133,098 $ 128,207
Receivables, net 413 1,437    
Other current assets 189 1,329    
Total current assets 604 3,241    
Property and equipment, net 0 2,561    
Other assets, net 1,029 1,502    
Total assets of discontinued operations 1,633 7,304    
Accounts payable and accrued expenses 521 1,344    
Deferred tuition revenue 0 1,164    
Remaining lease obligations 15,493 13,132    
Total current liabilities 16,014 15,640    
Remaining lease obligations 28,143 30,952    
Other 286 6,444    
Total liabilities of discontinued operations $ 44,443 $ 53,036